Daily Sunspot Evaluation
Observation Sheet Sunday, 9 April 1967
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 8
- Number of spots (f)
- 95
- Relative number (R)
- 175
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670409.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 14 | 24 | 10E | 108 | |||
| 2 | A – 6 | 19 | 28E | 90 | |||
| 3 | J – 1 | 15 | 65E | 53 | |||
| 4 | C – 11 | -26 | 10W | 128 | |||
| 5 | A – 1 | -24 | 31W | 149 | |||
| 6 | E – 54 | -20 | 37W | 155 | |||
| 7 | A – 4 | -20 | 53W | 171 | |||
| 8 | B – 4 | 31 | 20W | 138 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.